Dissertation > Excellent graduate degree dissertation topics show

Studies on New Reinforcing Agent of Polymer Bonded Explosive

Author: XiaKai
Tutor: DengJianRu
School: Hunan University
Course: Chemical Engineering
Keywords: Polymer Bonded Explosive (PBX) Reinforcing Agent Piperazine Propylene Oxide Mechanical Properties
CLC: TQ560.4
Type: Master's thesis
Year: 2012
Downloads: 9
Quote: 0
Read: Download Dissertation


With the development of modern high performance of weapon system, thesecurity problems have become increasingly prominent. In order to adapt to the highperformance of weapon equipment, every country has actively carried out research oninsensitive high explosive properties, the mechanical environment will have a greatinfluence on the detonation properties before the service, thereby affecting the survivalability and combat efficiency of weapon, so the mechanical properties of explosives assafety study is attracting an important component of attention. Casting PBX is theprimary representative of pouring curing explosives.Because of different purposes ofthe battle,casting PBX against overload performance requirements isdifferent.Generally speaking,only when tensile strength reach3~5MPa andcompressive strength reach more than10MPa can casting PBX meet the different needsof warhead charge requirements.However, the current study of casting PBXproperties of explosives from the requirement still has a certain difference, thereforethis topic in PBX increasing the mechanical properties of explosives was researched.In order to improve the PBX column mechanical strength, the most direct andeffective method is to improve the adhesive matrix strength,ie.designing andsynthetizing the molecular, developing a reinforcing agent to introduce into PBXpropellant formulations, through the chain extension reaction, adding a binder matrixof hard segment content, while increasing the cross-linking density, thereby greatlyimproving the mechanical properties of HTPB binder matrix to improve themechanical strength of PBX propellant objective.The topic has chosen piperazine and propylene oxide as the main raw material,and used the atmospheric synthesis and high pressure synthesis of the two differenttechnologies to synthesize the N, N-(β-hydroxypropyl) piperazine, considering time,temperature, ratio of raw materials. And then compare the quality of the two kinds ofprocess, it was determined to use the high pressure synthesis method which has moreadvantages. High pressure reaction conditions are: reaction time1h, reactiontemperature40℃, anhydrous piperazine and propylene oxide in a molar ratio of1:2.0.Preparation of N, N-(β-hydroxypropyl) piperazine new reinforcing agent,respectively be and BDO for the HTPB/TDI binder matrix chain extension reaction, thermal curing process for the preparation of PU elastomer film.Through the filmtensile test, the breaking elongation and tensile strength to the study of new reinforcingagent whether the film has advantages or not. Test results show that the breakingelongation and tensile strength of using the N, N-(β-hydroxypropyl) piperazine newreinforcing agent of film are greatly improved, compared with the use of BDO film.In addition, this topic developed a new reinforcing agent can be used in PBXreinforcement, but also can be used for general civil polyurethane productdevelopment and modification.

Related Dissertations

  1. Reactive Hot-Pressing and Mechanical Properties of (ZrB2-ZrO2)/BN Composites,TB332
  2. Research on Welding Characteristics of CO2 Laser-GMA Hybrid Welding for Ultra-Low Carbon Bainitic Steel,TG456.7
  3. Microstructure and Mechanical Properties of Mg-Zn-Y-Zr Alloys,TG146.22
  4. Fabricationand Properties of SiC-AlN Multiphase Ceramics Prepared by Gelcasting,TQ174.62
  5. Synthesis of Polysulfones and Modification for Epoxy Adhesives,TQ433.437
  6. Research on Mechanical Properties of Concrete with Multi-Component Admixture,TU528
  7. Research on the Appearance Retention of Workplace Shirts Based on Fabric Mechanical Properties,TS941.1
  8. Research on Pre-wetting Sizing and Its Influence on the Quality of Cotton Yarns,TS105.213
  9. The Research on Extrusion Parameters Through the Plate Billet of Magnesium Alloy,TG379
  10. Study on the Mechanical Properties of Short Cut Aramid Fiber Reinforced Cement Mortar Composites,TU578.1
  11. Study on Influence of Preferred Orientation on Mechanical and Recoverable Properties of TN479 Shape Memory Alloy Sheet,TG139.6
  12. Development of Bionic Lightweight Basalt Fiber Reinforced Wood Plastics Composite Materials,TB332
  13. Comfort Performance and Mechanical Properties Research of Special-shaped Hollow Polyamide Filament Seamless Knitted Fabric,TS181
  14. Soybean protein fiber woven fabric sewing flatness of,TS941.63
  15. The Study on Relationship between Drape Aesthetic Perception and Property of Mechanics,TS101.923
  16. Preparation and Properties of Poly(lactic Acid)/Acetylated Starch Composite Films,R318.08
  17. Study on Microstructure and Performance of Laser Cladding Ni-Based Amorphous Alloy Coatings,TG174.4
  18. Study on Heat Endurance and Light Enduranceproperties of Polyurethane and Polyvinyl Chloride Coated Fabrics,TS195.597
  19. Study on the Modification of Basalt Fiber Composites Used for Wind Turbine Blades,TB332
  20. Research MVS yarn fabric performance,TS104
  21. Virtual fitting skirt semicircle shape SVM Classification Based on fabric,TS941.4

CLC: > Industrial Technology > Chemical Industry > Explosives industry, match industry > General issues. > Raw materials and auxiliary materials
© 2012 www.DissertationTopic.Net  Mobile